Barolet, Daniel Regulation of skin collagen metabolism in vitro using a pulsed 660 nm LED light source: clinical correlation with a single-blinded study. [electronic resource] - The Journal of investigative dermatology Dec 2009 - 2751-9 p. digital Publication Type: Clinical Trial; Journal Article ISSN: 1523-1747 Standard No.: 10.1038/jid.2009.186 doi Subjects--Topical Terms: AdultCells, CulturedCollagen Type I--geneticsDown-Regulation--radiation effectsFemaleHumansKeratinocytes--cytologyLightMaleMatrix Metalloproteinase 1--geneticsMiddle AgedPhototherapy--adverse effectsRejuvenationSingle-Blind MethodSkin AgingSkin Temperature--radiation effectsTissue EngineeringUp-Regulation--radiation effects